Quarterly report pursuant to Section 13 or 15(d)

Revenue and Accounts Receivable - Schedule of Revenue by Service Type (Detail)

v3.4.0.3
Revenue and Accounts Receivable - Schedule of Revenue by Service Type (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Health Care Organization, Receivable and Revenue Disclosures [Line Items]    
Revenue $ 6,068 $ 4,370
Biopharma Services    
Health Care Organization, Receivable and Revenue Disclosures [Line Items]    
Revenue 3,350 3,331
Clinical Services    
Health Care Organization, Receivable and Revenue Disclosures [Line Items]    
Revenue 2,456 873
Discovery Services    
Health Care Organization, Receivable and Revenue Disclosures [Line Items]    
Revenue $ 262 $ 166